Valve device for steam-heating apparatus.



'No. 800,321. PATENTED SEPT. 26, 1905 M. P. OSBOURN.

VALVE DEVIGE FOR STEAM HEATING APPARATUS.

I APPLICATION FILED 00m. 29, 1903.

FIG 1 JZ/W Mrnsssss: rm- Ton ATTORNEY.

UNITED STATES PATENT OFFICE.

MILLARD P. OSBOURN, OF MEROHANTVILLE, NEW JERSEY, ASSIGNOR TO WARRENWEBSTER AND COMPANY, A, CORPORATION OF NEW JERSEY.

VALVE DEVICE FOR STEAM-HEATING APPARATUS.

I Specification of Letters Patent. I

, Patented Sept. 26, 1905.

Application filed October 29,1963. se m. 179,008.

To aZZ whom it may concern/.

Be it known that I, MILLARD P. OsBoURN, of Merchantville, county ofCamden, and State of New Jersey, have invented an lmprove controlled bya pressure-motorcontrolledby the differential pressure in'the inlet andoutlet. use in "systems of steal h-heating in which a partial vacuum orlower pressure iscreated in the returns or outlets by suitablevacuumcreating devices but as heretoforeonstructed they have beenvarranged'to 'open thevalvepiece to allow the-water of condensationktoescape on the creation of the desireddiffer -v the different valves, anduniformity of action has been diflicult of attainment My presentimprovement consists in so arranging the motor with reference to thevalve that the differential created by the suctionor lower pressure atthe outlet acts to close the valve instead of opening it, and the valvewhich is outwardly opening is opened by the weight of the water in thevalvebody when l it is sufiicient to counteract the differential.- 4o

In order to obtain uniformity in the operation of the valves,notwithstanding variations in the differential acting on the motor, Iemploy an adjustable spring acting in aid of the motor to close thevalve. By adjusting the tension of this spring the effectiv'etens'iononthe valve-piece-may be regulated tocompen: sate for variations in thedifferential acting on the motor. I

In speaking of a pressure-motor itis to be understood that it may beeither ofthe piston type, as shown in the'drawings, or of the equivalentdiaphragm form.

Such devices are especiallyi ad'apted for of coni low-pressure orsuction chamber i. :or bonnet is provided with an internally f threadednipple s, in which is an adjustable 5 screw-plug 0, connected by aspring the'pressure motor.

In the drawings, Figure l is a vertical secdevice, and Fig. 2 is ahorizontal sectional view of the same on the line A A of Fig. 1.

a is the valve-body, having the usual inlet 6 and outlet '0 with athoroughfare 0?, controlled by the valve-piece e. The valve-piece e isconnected with a pressure-motor f, shown I as a piston in the upper partof the valvev tional view of my improved automatic valve body, by ahollow stem g, having a passageway 72., opening through the valve-pieceinto the outlet 0 andthrough the motor'f into the low-pressure orsuction chamber 71 above the piston. j is a vent inthe piston forming acommunication between the low-pressure or suction chamber 2' and theinterior. of the valve-body in communication with the inlet t b, Thisvent j is of smaller area than the passage-way it in the stem g, so that-a lower pressure Will be maintained in the suctionchamber c than existsin the body of the valve i communicating with the inlet.

is is a cap or bonnet closing the upper part of the valve-body andforming the top of the This cap m with --The valve-seatn is formed onthe under side of the thoroughfare a,- and the valve-piece e 5 isarranged below and closesby upward movement, so that the spring m actsto lift the valve-piece and hold it normally closed. As the-pressure inthe chamber a is lower than I the pressure acting on the lower side ofthe piston,:this diiferential also acts to raise the valve-pieceand holdit closed. The valvepiece is thus closed by the combined action ofthedifferential pressure acting on the piston and. the tension of thespring, and asthe tension of the spring may be regulated by theadjustment of the screw-plug 0 a uniform efi fective tension on-cthevalve-piece may be maintained, notwithstanding variations in thedifferential. This is an important feature in vacuum systems, or systemsin which a lower pressure or partial vacuum is produced in the returnscommunicating with the outlets of the valves, Where by reason of thediflerent loca-. tion-ofthe radiators and-their valves with respect-t0the exhausting devices as well as the source of supply it is notpossible to maintain the same degree of suction or low pressure at eachvalve or the same steam-pressure in the radiator. Consequently the samedifferential pressure cannot be maintained on the motors of all valves.The adjustment of the spring m compensates for this variation in thedifferential pressure and enables asubstantially uniform effectivetension to be maintained on each valve wherever located.

The operation of the device is as follows: The air is drawn out of theradiator through the vent j, chamberal, and passage-way it into theoutlet 0. When water of condensation collects in sufficient volume inthe body a to overcome by its weight the upward tension on thevalve-piece c, it will open the valvepiece and pass into the outlet, andthe valvepiece will again close in its seat.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

1. In a valve device, the combination of a valve-body having an inletand an outlet and a thoroughfare, a pressure-motor in said valvebodyhaving one side in communication with the inlet side and the other sidein communication with a low-pressure chamber in which a lower pressureis maintained than on the inlet side, a valve-piece to control thethoroughfare arranged to be normally closed by the differential pressureon the pressure-motor, and a spring acting in aid of the pressure-motorto close said valve.

2. In a valve device, the combination of a Valve-body having an inletand an outlet and a thoroughfare, a pressure-motor in said valvebodyhaving one side in communication with the inlet side and the other sidein communi cation with a low-pressure chamber in which a lower pressureis maintained than on the inlet side, a valve-piece to control thethoroughfare arranged to be normally closed by the differential pressureon the pressure-motor, a spring acting in aid of the pressure-motor toclose said valve, and means to adjust the tension of said spring toregulate the effective tension acting to close said valve-piece.

3. In a valve device, the combination of a valve-body having an inletand an outlet and a thoroughfare, a pressure-motor in said valvebodyhaving one side in communication with the inlet side and the other sidein communication with a low-pressure chamber in which a lower pressureis maintained than on the inlet side, said pressure-motor having a ventbetween the inlet side of the valve-body and the low-pressure chamberfor the escape of air, a valve-piece to control the thoroughfarearranged to be normally closed by the differential pressure on thepressure-motor, and a spring acting in aid of the pressure-motor toclose said valve.

4. In a valve device, the combination of a valve-body having an inletand an outlet and a thoroughfare, a pressure-motor in said valvebodyhaving one side in communication with the inlet side and the other sidein communication with a low-pressure chamber in which a lower pressureis maintained than on the inlet side, a valve-piece to control thethoroughfare arranged to be normally closed by the differential pressureon the pressure-motor, and a spring acting in aid of the p ressure-motorto close said valve, said valve device having a communication betweenthe inlet side of the valve-body and the low-pressure chamber for theescape of air.

5. In a valve device, the combination of an outwardly-openingvalve-piece, a pressuremotor controlled by the differential pressure onthe inlet and outlet sides acting on said valve-piece to close it and aspring acting on said pressure-motor in aid of the differential to closesaid valve-piece.

6. In a valve device, the combination of an outwardly-openingvalve-piece, a pressuremotor controlled by the differential pressure onthe inlet and outlet sides acting on said valve-piece to close it and aspring acting on said pressure-motor in aid of the differential to closesaid valve-piece, and means to adjust the tension of said spring and theeffective tension on the valve-piece.

7. A valve device consisting of a valve-bod y having an inlet and anoutlet and a thoroughfare, a pressure-motor in the upper part of saidvalve-body, an outwardly-opening valve-piece to control thethoroughfare, a hollow stem connectingv said valve-piece with thepressure-motor and having a passage-way between the outlet and the upperside of the pressure-motor, and a spring acting in aid of thepressure-motor to close the valve-piece on the seat.

8. A valve device consisting of a valve-bod y having an inlet and anoutlet and a thoroughfare, apressure-motor in the upper part of saidvalve body provided with a vent, an outwardly-opening valve-piece tocontrol the thoroughfare, a hollow stem connecting said valve-piece withthe pressure-motor and having a passage-Way between the outlet and theupper side of the pressure-motor, and a spring acting in aid of thepressure-motor to close the valve-piece on its seat.

9. A valve device consisting of a val ve-body having an inlet and anoutlet and a thoroughfare, a pressure-motor in the upper part of saidvalve-body having a vent, a bonnet closing the upper part of thevalve-body and forming a chamber above the motor, said bonnet beingprovided with an internally-threaded nipple, an adjustable threaded plugin said nipple, a spring connecting said plug and motor and acting tolift the motor, an outwardly-opening valve-piece to control thethoroughfare, and a hollow stem between the valve-piece andpressure-motor forming a passage-way between motor by the weight of theWater acting theontlet and the chamber above the motor. upon it.

10. In a valve device, the combination of an In testimony of whichinvention I hereunto outwardly-opening valve-piece, and a pressetinyhand.

5 sure-motor controlled by the diflere'ntial pres- I I MILLARD P.OSBOURN.

sures on the inlet and outlet sides acting on Witnesses: saidvalve-piece to close it, the valve-piece be- ERNEST HOWARD HUNTER,

ing opened against the action of said pressure- R. M. KELLY.

